判定NSString是否为nil,empty或者all whitespace
2014-07-03 09:27
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- (BOOL)isEmptyString:(NSString *) string {
if([string length] == 0) { //string isempty or nil
return YES;
}
else if([[stringstringByTrimmingCharactersInSet:[NSCharacterSet
whitespaceCharacterSet]]length] == 0) {
//string is all whitespace
return YES;
}
return NO;
}
if([string length] == 0) { //string isempty or nil
return YES;
}
else if([[stringstringByTrimmingCharactersInSet:[NSCharacterSet
whitespaceCharacterSet]]length] == 0) {
//string is all whitespace
return YES;
}
return NO;
}
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